I know the anticipation is killing everyone on this new Ford, including me. Can't wait but I wouldn't be worried right now if you don't have that email confirmation from Ford. I ordered back mid June. Have made mult changes, per dealer they kept each change on the same sales order to keep the date. And from what I understand if you make changes after the fact you might not get email from Ford. I have the printed and signed sales order from dealer, has a priority Code 10 plus nothing being build is late availability. The actual scheduling doesn't begin till 7/15
Also, given the current climate in the auto industry I wouldn't be surprised if we don't see any Mavericks till Dec/January. Hope I'm wrong but that's what I'm planning on anyway. Anything sooner would be a bonus.
I would say that as long as you have sales order from your dealership, signed and dated by you showing your build you should be good. Once 7/15 arrives I'm sure those with no emails will be getting after 7/15.